placed on the disabled list. He made his major league debut on that same day when he started the game at third base. He was hitless in 2 at-bats but scored a run after he was hit by a pitch. His first hit was a double off Kerry Wood of the Chicago Cubs on August 12. He hit his first major league home run, a grand slam on August 21, 2007, against Tony Armas of the Pittsburgh Pirates, making him only the second Rockie ever to hit a grand slam as his first major league home run. He struggled early, striking out 28 times in his first 55 ABs, and was sent down to Colorado Springs to regain his hitting stroke. He found it once again, and was called back to the Majors on July 19. Stewart won the starting third base job when Garrett Atkins moved to first base in place for the injured Todd Helton. Stewart received the NL Rookie of the Month award for his accomplishments in July 2008. He hit .432 with one home run, five doubles, eight runs scored and 15 RBIs in 12 games during the month of July. He also had a .614 slugging percentage and a .519 on-base percentage. After being the Rockies regular third baseman for most of 2009 and 2010, he split 2011 between the Majors and AAA. In parts of 5 seasons with the Rockies, he hit .236 with 54 home runs and 187 RBI in 432 games. Chicago Cubs On December 8, 2011, Stewart was traded from the Colorado Rockies along with Casey Weathers to the Chicago Cubs for Tyler Colvin and DJ LeMahieu. He started the season playing third base with occasional starts by Jeff Baker, another former Rockie. On July 16, 2012, Stewart underwent wrist surgery and was put on the 60-day disabled list. In 55 games he hit .201 with 5 home runs and 17 RBI. On December 6, 2012, Stewart re-signed a 1-year $2 million deal with the Cubs. He played in 40 games with the AAA Iowa Cubs, hitting .168. In June 2013, Stewart was suspended ten games for making critical comments about the team on Twitter, which led to his release on June 25. Los Angeles Dodgers On July 5, 2013 he signed a minor league contract with the Los Angeles Dodgers, who assigned him to the AAA Albuquerque Isotopes. He hit